wisemapping-open-source/mindplot/src/main/javascript/TextEditor.js
2011-09-06 01:03:27 -03:00

265 lines
8.7 KiB
JavaScript

/*
* Copyright [2011] [wisemapping]
*
* Licensed under WiseMapping Public License, Version 1.0 (the "License").
* It is basically the Apache License, Version 2.0 (the "License") plus the
* "powered by wisemapping" text requirement on every single page;
* you may not use this file except in compliance with the License.
* You may obtain a copy of the license at
*
* http://www.wisemapping.org/license
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
mindplot.TextEditor = new Class({
initialize:function(topic) {
this._topic = topic;
},
_buildEditor : function() {
this._size = {width:500, height:100};
var result = new Element('div');
result.setStyles({
position:"absolute",
display: "none",
zIndex: "8",
width:"500px",
height:"100px"}
);
var inputContainer = new Element('div');
inputContainer.setStyles({
border:"none",
overflow:"auto"
});
inputContainer.inject(result);
var inputText = new Element('input',
{type:"text",
tabindex:'-1',
value:""}
);
inputText.setStyles({
border:"none",
background:"transparent"
});
inputText.inject(inputContainer);
var spanContainer = new Element('div');
spanContainer.setStyle('visibility', "hidden");
spanContainer.inject(result);
var spanElem = new Element('span', {tabindex:"-1"});
spanElem.setStyle('white-space', "nowrap");
spanElem.setStyle('nowrap', 'nowrap');
spanElem.inject(spanContainer);
return result;
},
_registerEvents : function(divElem) {
var inputElem = this._getTextareaElem();
var spanElem = this._getSpanElem();
divElem.addEvent('keydown', function (event) {
switch (event.key) {
case 'esc':
this.close(false);
break;
case 'enter':
this.close(true);
break;
default:
spanElem.innerHTML = inputElem.value;
var size = inputElem.value.length + 1;
inputElem.size = size;
if (spanElem.offsetWidth > (parseInt(divElem.style.width) - 100)) {
divElem.style.width = (spanElem.offsetWidth + 100) + "px";
}
break;
}
event.stopPropagation();
}.bind(this));
// If the user clicks on the input, all event must be ignored ...
divElem.addEvent('click', function(event) {
event.stopPropagation();
});
divElem.addEvent('dblclick', function(event) {
event.stopPropagation();
});
divElem.addEvent('mousedown', function(event) {
event.stopPropagation();
});
},
isVisible : function () {
return $defined(this._containerElem) && this._containerElem.getStyle('display') == 'block';
},
_updateModel : function () {
if (this._topic.getText() != this._getText()) {
var text = this._getText();
var topicId = this._topic.getId();
var actionDispatcher = mindplot.ActionDispatcher.getInstance();
actionDispatcher.changeTextToTopic([topicId], text);
}
},
show : function (text) {
if (!this.isVisible()) {
//Create editor ui
var editorElem = this._buildEditor();
editorElem.inject($(document.body));
this._containerElem = editorElem;
this._registerEvents(editorElem);
this._showEditor(text);
}
},
_showEditor : function (defaultText) {
var topic = this._topic;
// Hide topic text ...
topic.getTextShape().setVisibility(false);
// Set Editor Style
var nodeText = topic.getTextShape();
var font = nodeText.getFont();
font.size = nodeText.getHtmlFontSize();
font.color = nodeText.getColor();
this._setStyle(font);
// Set editor's initial text
var text = $defined(defaultText) ? defaultText : topic.getText();
this._setText(text);
// Set editor's initial size
var displayFunc = function() {
// Position the editor and set the size...
var textShape = this._topic.getTextShape();
textShape.positionRelativeTo(this._containerElem, {
position: {x: 'left',y:'top'},
edge: {x: 'left', y: 'top'}
});
this._containerElem.setStyle('display', 'block');
// Set size ...
var elemSize = topic.getSize();
this._setEditorSize(elemSize.width, elemSize.height);
var textareaElem = this._getTextareaElem();
textareaElem.focus();
this._positionCursor(textareaElem, !$defined(defaultText));
}.bind(this);
displayFunc.delay(10);
},
_setStyle : function (fontStyle) {
var inputField = this._getTextareaElem();
var spanField = this._getSpanElem();
if (!$defined(fontStyle.font)) {
fontStyle.font = "Arial";
}
if (!$defined(fontStyle.style)) {
fontStyle.style = "normal";
}
if (!$defined(fontStyle.weight)) {
fontStyle.weight = "normal";
}
if (!$defined(fontStyle.size)) {
fontStyle.size = 12;
}
inputField.style.fontSize = fontStyle.size + "px";
inputField.style.fontFamily = fontStyle.font;
inputField.style.fontStyle = fontStyle.style;
inputField.style.fontWeight = fontStyle.weight;
inputField.style.color = fontStyle.color;
spanField.style.fontFamily = fontStyle.font;
spanField.style.fontStyle = fontStyle.style;
spanField.style.fontWeight = fontStyle.weight;
spanField.style.fontSize = fontStyle.size + "px";
},
_setText : function(text) {
var inputField = this._getTextareaElem();
inputField.size = text.length + 1;
this._containerElem.style.width = (inputField.size * parseInt(inputField.style.fontSize) + 100) + "px";
var spanField = this._getSpanElem();
spanField.innerHTML = text;
inputField.value = text;
},
_getText : function() {
return this._getTextareaElem().value;
},
_getTextareaElem : function() {
return this._containerElem.getElement('input');
},
_getSpanElem : function() {
return this._containerElem.getElement('span');
},
_setEditorSize : function (width, height) {
var textShape = this._topic.getTextShape();
var scale = web2d.peer.utils.TransformUtil.workoutScale(textShape._peer);
this._size = {width:width * scale.width, height:height * scale.height};
this._containerElem.style.width = this._size.width * 2 + "px";
this._containerElem.style.height = this._size.height + "px";
},
_positionCursor : function(inputElem, selectText) {
// Select text if it's required ...
if (inputElem.createTextRange) //ie
{
var range = inputElem.createTextRange();
var pos = inputElem.value.length;
if (!selectText) {
range.select();
range.move("character", pos);
}
else {
range.move("character", pos);
range.select();
}
}
else if (!selectText) {
inputElem.setSelectionRange(0, inputElem.value.length);
}
},
close : function(update) {
if (this.isVisible()) {
// Update changes ...
if (!$defined(update) || update) {
this._updateModel();
}
// Let make the visible text in the node visible again ...
this._topic.getTextShape().setVisibility(true);
// Remove it form the screen ...
this._containerElem.dispose();
this._containerElem = null;
}
}
});